is detonated. we are also learning about his older brother, tamerlan tsarnaev. in 2009 he was arrested for domestic assault after his girlfriend said he beat her up no last year he openly argued with a preacher at a mosque, telling him holiday celebrations were not allowed by islam. last year he disrupted a sermon by martin luther king calling him a nonbeliever. today marks one week since the attack. from the oval office and around the country a solemn tribute. >> the boston area, most every spot in the city is silent. >> reporter: another step toward normal, boyleston street turned over by federal investigators to the city of boston in the sign of ip ves gags intensity, a tree possibly touched by dzhokhar. taken as evidence. and photos of him, possibly tracking the murder of officer carter. some seriously injured in the hospital, hope. >> nearly all of the patients that have lost legs are already walking the halls with physical therapists. >> reporter: still, grim reminders here just about everywhere. in medford the funeral for krystle campbell. one more step to normal. at 10:00 a.m.